Chemistry Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? Nickel and cadmium Lead peroxide and lead Zinc and carbon Iron and cadmium Nickel and cadmium Lead peroxide and lead Zinc and carbon Iron and cadmium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Silicone is a polymer of Tetraalkyl silane Silane Silicon tetrachloride Dialkyl dichloro silane Tetraalkyl silane Silane Silicon tetrachloride Dialkyl dichloro silane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Wax used for making candle is chemically a mixture of Aromatic hydrocarbons Cyclic hydrocarbons Aliphatic and aromatic hydrocarbons Aliphatic hydrocarbons Aromatic hydrocarbons Cyclic hydrocarbons Aliphatic and aromatic hydrocarbons Aliphatic hydrocarbons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Commercial Vaseline is derived from Coal tar Plant gums Petroleum Wool wax Coal tar Plant gums Petroleum Wool wax ANSWER DOWNLOAD EXAMIANS APP
Chemistry The presence of ozone in the stratosphere is responsible for Checking the penetration of ultra-violet rays to the earth Higher rate of photosynthesis Increasing the average global temperature in recent years Supplying oxygen for people travelling in jets Checking the penetration of ultra-violet rays to the earth Higher rate of photosynthesis Increasing the average global temperature in recent years Supplying oxygen for people travelling in jets ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chief source for the production of nitrogeneous fertilizers is : Ammonia Nitric acid Nitrogen dioxide Nitrogen Ammonia Nitric acid Nitrogen dioxide Nitrogen ANSWER DOWNLOAD EXAMIANS APP
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